Spack v0.22.0 (2024-05-12) was released. Please refer to point (4), " Revert default spack install behavior to --reuse".
Spack v0.22 will use dependency packages built by a different compiler. e.g.
# spack find
-- linux-rocky8-x86_64 / gcc@8.5.0 ------------------------------
gcc-runtime@8.5.0 intel-oneapi-compilers@2023.2.4
glibc@2.28 intel-oneapi-compilers-classic@2021.6.0
gmake@4.4.1 intel-oneapi-compilers-classic@2021.10.0
intel-oneapi-compilers@2021.2.0 patchelf@0.17.2
intel-oneapi-compilers@2022.1.0
-- linux-rocky8-x86_64 / intel@2021.2.0 -------------------------
autoconf@2.72 libedit@3.1-20230828 openssl@3.3.0
automake@1.16.5 libevent@2.1.12 perl@5.26.3
bison@3.8.2 libpciaccess@0.17 pigz@2.8
bzip2@1.0.8 libsigsegv@2.14 pkgconf@2.2.0
ca-certificates-mozilla@2023-05-30 libtool@2.4.6 pmix@4.2.2
cmake@3.24.4 libxcrypt@4.4.35 tar@1.34
curl@8.7.1 libxml2@2.10.3 texinfo@7.0.3
diffutils@3.10 m4@1.4.19 util-macros@1.19.3
findutils@4.9.0 ncurses@6.5 xz@5.4.6
gettext@0.22.5 nghttp2@1.57.0 zlib-ng@2.1.6
gmake@4.4.1 numactl@2.0.14 zstd@1.5.6
hwloc@2.9.1 openmpi@4.0.2
krb5@1.20.1 openssh@9.7p1
-- linux-rocky8-x86_64 / intel@2021.6.0 -------------------------
openmpi@4.1.5 perl@5.26.3
-- linux-rocky8-x86_64 / intel@2021.10.0 ------------------------
perl@5.26.3
==> 49 installed packages